EP2807059A1 - Method and evaluation system for supervising correct belt utilization - Google Patents

Method and evaluation system for supervising correct belt utilization

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Publication number
EP2807059A1
EP2807059A1 EP12780097.7A EP12780097A EP2807059A1 EP 2807059 A1 EP2807059 A1 EP 2807059A1 EP 12780097 A EP12780097 A EP 12780097A EP 2807059 A1 EP2807059 A1 EP 2807059A1
Authority
EP
European Patent Office
Prior art keywords
buckle
belt
motor vehicle
door
evaluation system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP12780097.7A
Other languages
German (de)
French (fr)
Other versions
EP2807059B1 (en
Inventor
Martin Brand
Philip Rigley
Walter Settgast
Heiko Kübler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Audi AG
Original Assignee
Audi AG
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Publication date
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Publication of EP2807059A1 publication Critical patent/EP2807059A1/en
Application granted granted Critical
Publication of EP2807059B1 publication Critical patent/EP2807059B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R22/00—Safety belts or body harnesses in vehicles
    • B60R22/48—Control systems, alarms, or interlock systems, for the correct application of the belt or harness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R22/00—Safety belts or body harnesses in vehicles
    • B60R22/48—Control systems, alarms, or interlock systems, for the correct application of the belt or harness
    • B60R2022/4808—Sensing means arrangements therefor
    • B60R2022/4816—Sensing means arrangements therefor for sensing locking of buckle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R22/00—Safety belts or body harnesses in vehicles
    • B60R22/48—Control systems, alarms, or interlock systems, for the correct application of the belt or harness
    • B60R2022/4808—Sensing means arrangements therefor
    • B60R2022/4858—Sensing means arrangements therefor for sensing pressure on seat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R22/00—Safety belts or body harnesses in vehicles
    • B60R22/48—Control systems, alarms, or interlock systems, for the correct application of the belt or harness
    • B60R2022/4866—Displaying or indicating arrangements thereof

Definitions

  • the invention relates to a method for monitoring a correct belt use in a motor vehicle according to the preamble of patent claim 1 and an evaluation system for carrying out this method according to claim 9.
  • an adaptive speed control system with a so-called stop-and-go function or with a Traffic jam assistance system can only be used with the necessary safety margin for the driver or passenger, if these persons have actually put on the seat belts. Since some drivers or occupants of motor vehicles lack safety awareness for putting on the seatbelt, these people often use a so-called belt dummy in the form of a sheet metal strip or a cut belt tongue in the buckle in daily vehicle use, thus pretending to use the seatbelt. With this manipulation on the buckle or with a manipulation of the buckle electrics, the Gurttrageauffound is shut down in the vehicle.
  • the conventional safety system of the motor vehicle also erroneously determines that there is belt use, although, for example, only one belt dummy is inserted into the belt buckle.
  • the vehicle safety system can not adapt its safety strategies for the operation of adaptive driver assistance systems and for the airbag control to the situation "belt not put on.” Systems for detecting the presence of the driver are undone, which leads to incorrect vehicle safety strategies and thus to an increased risk.
  • Such recognition systems may also include belt sensors which monitor the insertion of the belt tongue in the buckle, as is known from DE 10 2009 01 1 609 A1.
  • these known systems are not suitable for detecting a simulated use of the belt, in which in the buckle occupied Vehicle seat a belt tongue, without the safety belt to use, is inserted into the buckle.
  • the invention has for its object to provide a method for monitoring a correct use of the belt, which can recognize a simulated use of the belt with the simplest possible means.
  • the invention has the further object of providing an evaluation system with which the method according to the invention can be carried out.
  • the object relating to the method according to the invention is achieved by the features of patent claim 1. Preferred embodiments of the invention are disclosed in the subclaims.
  • the method according to claim 1 provides for the detection of a pretended belt use by an evaluation of the timing of GurtSbetuschisten in relation to other detected on the motor vehicle operations and / or conditions.
  • different detection strategies are conceivable, which are essentially based on the fact that illogical belt buckle actuations, which also include a permanent seatbelt actuation, at least serve as an indication of an incorrectly applied seatbelt.
  • Such illogical Gurtschtschttechnik Trent consists for example in that the buckle is permanently closed, although the engine is turned off, the driver's seat is no longer occupied and the driver's door is closed from the outside.
  • a significant advantage of the method according to the invention is that no additional sensors or other additional components for carrying out the method are required. Rather, it is sufficient to existing event information and / or status information, which are for example already transmitted via a data bus to the vehicle control to Monitoring and detection of a pretended belt use are evaluated.
  • the opening of the driver's door with subsequent driving can also be concluded that the belt is not being used correctly if no operation or change of state on the belt buckle can be detected in the corresponding period.
  • the monitoring of a correct use of the belt can be carried out on the basis of individual monitoring criteria, or else by evaluating a plurality of different monitoring criteria, which are evaluated in the overall combination and used to trigger appropriate warning signals and / or influencing vehicle safety systems.
  • the method for detecting a correct belt use and the timing of Gurtschbetuschisten can be monitored.
  • an opening can be made shortly after closing the seat belt on a Note pseudo-use of the seat belt, especially if it is very short buckle opening times, for example, less than five seconds.
  • the method according to the invention offers the possibility of influencing or deactivating, for example, the adaptive cruise control and / or start-stop systems when a pretended belt use is detected, provided that this serves to improve safety when the seatbelt is not worn.
  • the airbag systems can be controlled in pretended use of the belt so that they offer a maximum possible safety function for the vehicle occupants despite not used seat belts.
  • a preferred development provides that in the method for a detected fake belt use a corresponding identifier is stored, which can be queried by the vehicle system at the next engine start and taken into account for controlling relevant security systems.
  • This stored identifier can also preferably be read by an external reader. This allows the vehicle service in a very simple way to make any electrical manipulations performed on the buckle sensor.
  • the evaluation system has a memory or buckle state counter which stores the timing of opening and closing operations to at least one buckle of the motor vehicle. In connection with further vehicle events and / or vehicle conditions, a fake harness use can be detected.
  • the buckle state counter it can be determined in particular whether a change in status has taken place from "belt to" to "belt to” and vice versa.
  • the buckle state counter may preferably be integrated in the control unit of the motor vehicle, so that no additional control and / or storage means are required. The contents of the memory or the state of the buckle state counter can be read via a diagnostic system or other reading device on the motor vehicle.
  • Fig. 2 is a block diagram of a logic logic for explaining the method according to the invention.
  • the block diagram shown in FIG. 1 comprises an evaluation system AWS to which door lock signals TS, belt lock signals GS and further signals occurring on the motor vehicle are transmitted on the input side. These further signals include the current vehicle speed v, a seat occupancy signal SB, brake and accelerator pedal signals BF, the ignition start signal ZA, a key position signal SP characterizing the position of the vehicle key, and a time signal T.
  • a memory M arranged in the evaluation system AWS which also the function of a buckle state counter can be realized, all signals occurring on the input side can be stored with a temporal assignment.
  • the evaluation system AWS can thus subject the different signals to a logical check and thereby determine, in particular, whether a seat belt buckle operation or an existing seat belt buckle condition, for example closed buckle, takes into account the further signals TS, v, SB, BF, ZA, SP and T occurring on the input side correct or manipulated use of the belt. If, for example, a buckle signal GS characterizing this condition is transmitted to the evaluation system AWS while the buckle is permanently closed, and a door signal TS, which marks the closing of the vehicle door from the outside, occurs on the corresponding vehicle door, the evaluation system AWS can thereupon be manipulated or simulated Close belt use and inform the safety system SYS of the motor vehicle about it.
  • a seat belt buckle operation or an existing seat belt buckle condition for example closed buckle
  • the SYS safety system can, for example, switch off systems which, if the seat belt is not properly worn, would pose a risk to the respective person or to the respective persons.
  • the evaluation system AWS like the memory M, can be an integral part of the control systems already present in the motor vehicle, so that a detection as to whether a safety belt is used correctly or only pretended by monitoring the time sequence of the signals TS, GS, v, SB, BF, ZA, SP and T are performed.
  • a further logical AND operation 3 also monitors whether a door lock is present from the outside and the driver's belt lock is always present until the bus system has been switched off and no change in the total number of times is detectable at the driver's wheel lock counter. If all these events and conditions coincide, the logical AND operation 3 results in an acknowledgment TRUE3, which signals a further indication of a feigned use of the belt.
  • the confirmations TRUE1 to TRUE3 are monitored via a fourth AND operation 4, so that the confirmation TRUE is derived altogether only when the confirmations TRUE1 to TRUE3 are present at the same time which then leads to system shutdowns and / or system interference in the safety system of the motor vehicle. If the confirmation is TRUE, it is concluded that the presence of a feigned belt use and informed the safety system of the motor vehicle. This can not only lead to the shutdown or modification of safety systems used in motor vehicles, but also lead to the triggering of visual and / or audible warning signals.

Abstract

The invention relates to a method and to an evaluation system (AWS) for supervising a correct belt utilization of at least one safety belt in a motor vehicle, wherein the opened and/or closed safety belt lock state at the respective belt lock (GS) of a motor vehicle seat occupied by a person is supervised and, when a non-closed belt lock is recognized, a warning signal is put out and/or the security system of the motor vehicle is influenced. In particular, simulated safety belt utilization is also recognized by evaluating the chronological sequence of safety belt lock actuations in relation to further procedures and/or states determined at the vehicle.

Description

Beschreibung Verfahren und Auswertesvstem zur Überwachung einer korrekten  Description Method and evaluation system for monitoring a correct
Gurtbenutzunq  Gurtbenutzunq
Die Erfindung betrifft ein Verfahren zur Überwachung einer korrekten Gurtbenutzung in einem Kraftfahrzeug gemäß Oberbegriff des Patentanspruchs 1 sowie ein Auswertesystem zur Durchführung dieses Verfahrens gemäß Patentanspruch 9. The invention relates to a method for monitoring a correct belt use in a motor vehicle according to the preamble of patent claim 1 and an evaluation system for carrying out this method according to claim 9.
Es ist gesetzlich vorgeschrieben, dass die Insassen von Kraftfahrzeugen während der Fahrt Sicherheitsgurte benutzen, weshalb in modernen Kraftfahrzeugen entsprechende Überwachungssysteme installiert sind, die erkennen, ob an einem von einer Person belegten Fahrzeugsitz die Gurtzunge des zugehörigen Sicherheitsgurts in das Gurtschloss korrekt eingesetzt ist. Wird von den bekannten Überwachungssystemen festgestellt, dass an einem von einer Person benutzten Fahrzeugsitz die Gurtzunge des zugehörigen Sicherheitsgurts nicht im Gurtschloss steckt, erfolgt in wiederkehrenden Zeitabständen während der Fahrt ein Warnsignal so lange, bis die Gurtzunge des Sicherheitsgurts in das Gurtsschloss eingesetzt ist. Das korrekte Anlegen eines Sicherheitsgurts ist in modernen Kraftfahrzeugen nicht nur wegen der Rückhaltefunktion des Sicherheitsgurts im Falle eines Unfalls wichtig, sondern auch aus Sicherheitsgründen im Hinblick auf eine möglichst gefahrlose · Funktion von Airbagsystemen und Fahrerassistenzsystemen. So können beispielsweise ein adaptives Geschwindigkeits- regelsystem mit einer so genannten Stop-and-go-Funktion oder mit einem Stauassistenzsystem nur dann mit der erforderlichen Sicherheitsreserve für den Fahrer oder auch Beifahrer genutzt werden, wenn diese Personen auch tatsächlich die Sicherheitsgurte angelegt haben. Da bei manchen Fahrern oder Insassen von Kraftfahrzeugen ein Sicherheitsbewusstsein für das Anlegen des Sicherheitsgurts fehlt, wird im täglichen Fahrzeuggebrauch von diesen Personen oftmals ein so genannter Gurtdummy in Form eines Metallblechstreifens oder einer abgeschnittenen Gurtzunge in das Gurtschloss eingesetzt, um so eine Benutzung des Sicherheitsgurts vorzutäuschen. Mit dieser Manipulation am Gurtschloss oder auch mit einer Manipulation an der Gurtschlosselektrik, wird im Fahrzeug die Gurttrageaufforderung stillgelegt. Dadurch wird außerdem vom herkömmlichen Sicherheitssystem des Kraftfahrzeugs fälschlicher Weise festgestellt, dass eine Gurtbenutzung vorliegt, obgleich beispielsweise nur ein Gurtdummy in das Gurtschloss eingesetzt ist. Das Fahrzeugsicherheitssystem kann dadurch seine Sicherheitsstrategien für den Betrieb von adaptiven Fahrerassistenzsystemen und für die Airbagsteuerung nicht an die Situation „Gurt nicht angelegt" anpassen. Systeme zur Erkennung der Fahreranwesenheit werden ausgehebelt, was zu falschen Fahrzeugsicherheitsstrategien und damit zu einer erhöhten Gefährdung führt. It is required by law that the occupants of motor vehicles use safety belts while driving, which is why in modern vehicles appropriate monitoring systems are installed which detect whether the seat belt of the associated seat belt is correctly seated in the seat belt buckle on a vehicle seat occupied by a person. If it is determined by the known monitoring systems that the belt tongue of the associated seat belt is not inserted into the seat belt buckle on a vehicle seat used by a person, a warning signal is issued at regular intervals while driving until the belt tongue of the seat belt is inserted into the belt buckle. Correct fitting of a seat belt is important in modern motor vehicles not only because of the seat belt's restraint function in the event of an accident, but also for safety reasons with regard to the most risk-free function of airbag systems and driver assistance systems. For example, an adaptive speed control system with a so-called stop-and-go function or with a Traffic jam assistance system can only be used with the necessary safety margin for the driver or passenger, if these persons have actually put on the seat belts. Since some drivers or occupants of motor vehicles lack safety awareness for putting on the seatbelt, these people often use a so-called belt dummy in the form of a sheet metal strip or a cut belt tongue in the buckle in daily vehicle use, thus pretending to use the seatbelt. With this manipulation on the buckle or with a manipulation of the buckle electrics, the Gurttrageaufforderung is shut down in the vehicle. As a result, the conventional safety system of the motor vehicle also erroneously determines that there is belt use, although, for example, only one belt dummy is inserted into the belt buckle. As a result, the vehicle safety system can not adapt its safety strategies for the operation of adaptive driver assistance systems and for the airbag control to the situation "belt not put on." Systems for detecting the presence of the driver are undone, which leads to incorrect vehicle safety strategies and thus to an increased risk.
Zur Erkennung der Sitzbelegung eines Fahrzeugsitzes und insbesondere des Fahrersitzes in einem Kraftfahrzeug können Sitzbelegungssensoren oder andere Insassenerkennungssysteme verwendet werden, wie diese in der DE 10 23 472 A1 angegeben sind. Derartige Erkennungssysteme können auch Gurtsensoren umfassen, die das Einstecken der Gurtzunge in das Gurtschloss überwachen, wie dies aus der DE 10 2009 01 1 609 A1 bekannt ist. Diese bekannten Systeme eignen sich jedoch nicht zur Erkennung einer vorgetäuschten Gurtbenutzung, bei der in das Gurtschloss eines belegten Fahrzeugsitzes eine Gurtzunge, ohne den Sicherheitsgurt zu benutzen, in das Gurtschloss eingesetzt wird. To detect the seat occupancy of a vehicle seat and in particular the driver's seat in a motor vehicle seat occupancy sensors or other occupant detection systems can be used, as these are disclosed in DE 10 23 472 A1. Such recognition systems may also include belt sensors which monitor the insertion of the belt tongue in the buckle, as is known from DE 10 2009 01 1 609 A1. However, these known systems are not suitable for detecting a simulated use of the belt, in which in the buckle occupied Vehicle seat a belt tongue, without the safety belt to use, is inserted into the buckle.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zur Überwachung einer korrekten Gurtbenutzung anzugeben, welches mit möglichst einfachen Mitteln eine vorgetäuschte Gurtbenutzung erkennen kann. Außerdem liegt der Erfindung die weitere Aufgabe zugrunde, ein Auswertesystem anzugeben, mit dem das erfindungsgemäße Verfahren durchführbar ist. Die das erfindungsgemäße Verfahren betreffende Aufgabe wird mit den Merkmalen des Patentanspruchs 1 gelöst. Bevorzugte Weiterbildungen der Erfindung sind in den Unteransprüchen offenbart. The invention has for its object to provide a method for monitoring a correct use of the belt, which can recognize a simulated use of the belt with the simplest possible means. In addition, the invention has the further object of providing an evaluation system with which the method according to the invention can be carried out. The object relating to the method according to the invention is achieved by the features of patent claim 1. Preferred embodiments of the invention are disclosed in the subclaims.
Das Verfahren gemäß Patentanspruch 1 sieht die Erkennung einer vorgetäuschten Gurtbenutzung durch eine Auswertung der zeitlichen Abfolge von Gurtschlossbetätigungen in Bezug auf weitere am Kraftfahrzeug festgestellte Vorgänge und/oder Zustände vor. Dabei sind unterschiedliche Erkennungsstrategien denkbar, die im Wesentlichen darauf beruhen, dass unlogische Gurtschlossbetätigungen, zu denen auch eine Dauer- Gurtschlossbetätigung gehört, zumindest ein Indiz für einen nicht korrekt angelegten Sicherheitsgurt dienen. Eine derartige unlogische Gurtschlossbetätigung besteht beispielsweise darin, dass das Gurtschloss dauernd geschlossen ist, obgleich der Motor abgestellt, der Fahrersitz nicht mehr belegt ist und die Fahrertür von außen geschlossen wird. Dabei besteht ein wesentlicher Vorteil des erfindungsgemäßen Verfahrens darin, dass keine zusätzlichen Sensoren oder sonstige zusätzliche Bauteile zur Durchführung des Verfahrens erforderlich sind. Vielmehr genügt es, vorhandene Ereignisinformationen und/oder Zustandsinformationen, die beispielsweise ohnehin über einen Datenbus zur Fahrzeugsteuerung übertragen werden, zur Überwachung und Erkennung einer vorgetäuschten Gurtbenutzung ausgewertet werden. The method according to claim 1 provides for the detection of a pretended belt use by an evaluation of the timing of Gurtschlossbetätigungen in relation to other detected on the motor vehicle operations and / or conditions. In this case, different detection strategies are conceivable, which are essentially based on the fact that illogical belt buckle actuations, which also include a permanent seatbelt actuation, at least serve as an indication of an incorrectly applied seatbelt. Such illogical Gurtschlossbetätigung consists for example in that the buckle is permanently closed, although the engine is turned off, the driver's seat is no longer occupied and the driver's door is closed from the outside. In this case, a significant advantage of the method according to the invention is that no additional sensors or other additional components for carrying out the method are required. Rather, it is sufficient to existing event information and / or status information, which are for example already transmitted via a data bus to the vehicle control to Monitoring and detection of a pretended belt use are evaluated.
Bereits eine von außen entriegelte Fahrertür bei bereits geschlossenem Gurtschloss am Fahrersitz kann auf eine Gurtmanipulation hinweisen und als solche von einem Auswertesystem, welches Teil des Sicherheitssystems des Kraftfahrzeugs sein kann, erkannt werden. Already unlocked from the outside driver's door with already closed buckle on the driver's seat can point to a Gurtmanipulation and recognized as such by an evaluation system, which may be part of the safety system of the motor vehicle.
Auch das Öffnen der Fahrertüre mit nachfolgendem Fahrbetrieb lässt auf eine nicht korrekte Gurtbenutzung schließen, wenn in dem entsprechenden Zeitraum keine Betätigung bzw. Zustandsänderung am Gurtschloss festgestellt werden kann. The opening of the driver's door with subsequent driving can also be concluded that the belt is not being used correctly if no operation or change of state on the belt buckle can be detected in the corresponding period.
Ein Hinweis auf eine Gurtmanipulation ist auch dann gegeben, wenn am Fahrergurtschloss über mehrere Fahrzyklen hinweg mit Öffnen und Schließen der Fahrertüre keine Zustandsänderungen am Fahrergurtschloss auftreten.An indication of a belt manipulation is also given when no changes in the state at the Fahrergurtschloss over several driving cycles away with opening and closing the driver's door on the Fahrergurtschloss.
Dabei kann die Überwachung einer korrekten Gurtbenutzung anhand von einzelnen Überwachungskriterien erfolgen, oder aber auch durch Auswertung mehrerer unterschiedlicher Überwachungskriterien, die in der Gesamt- kombination ausgewertet und zur Auslösung entsprechender Warnsignale und/oder zur Beeinflussung von Fahrzeugsicherheitssystemen herangezogen werden. The monitoring of a correct use of the belt can be carried out on the basis of individual monitoring criteria, or else by evaluating a plurality of different monitoring criteria, which are evaluated in the overall combination and used to trigger appropriate warning signals and / or influencing vehicle safety systems.
Auch das Abschließen einer Fahrzeugtür von außen in Verbindung mit einem ständig geschlossenen Gurtschloss weist ebenfalls auf eine Gurtmanipulation bzw. .Gurtschlossmanipulation hin. The conclusion of a vehicle door from the outside in conjunction with a constantly closed buckle also points to a Gurtmanipulation or . Buckle manipulation down.
Bei dem Verfahren zur Erkennung einer korrekten Gurtbenutzung kann auch die zeitliche Abfolge von Gurtschlossbetätigungen überwacht werden. So kann ein Öffnen mit kurz darauf erfolgtem Schließen des Sicherheitsgurts auf eine Pseudobenutzung des Sicherheitsgurtes hinweisen, insbesondere wenn es sich dabei um sehr kurze Gurtschloss-Öffnungszeiten von beispielsweise weniger als fünf Sekunden handelt. Das erfindungsgemäße Verfahren bietet die Möglichkeit, bei Erkennung einer vorgetäuschten Gurtbenutzung beispielsweise die adaptive Geschwindigkeitsregelung und/oder Start-Stop-Systeme zu beeinflussen oder zu deaktivieren, soweit dies zu einer Verbesserung der Sicherheit bei nicht angelegtem Sicherheitsgurt dient. In the method for detecting a correct belt use and the timing of Gurtschlossbetätigungen can be monitored. Thus, an opening can be made shortly after closing the seat belt on a Note pseudo-use of the seat belt, especially if it is very short buckle opening times, for example, less than five seconds. The method according to the invention offers the possibility of influencing or deactivating, for example, the adaptive cruise control and / or start-stop systems when a pretended belt use is detected, provided that this serves to improve safety when the seatbelt is not worn.
In entsprechender Weise können bei vorgetäuschter Gurtbenutzung die Airbagsysteme so angesteuert werden, dass diese trotz nicht verwendeter Sicherheitsgurte eine möglichst optimale Sicherheitsfunktion für die Fahrzeuginsassen bieten. In a corresponding manner, the airbag systems can be controlled in pretended use of the belt so that they offer a maximum possible safety function for the vehicle occupants despite not used seat belts.
Eine bevorzugte Weiterbildung sieht vor, dass bei dem Verfahren zu einer erkannten vorgetäuschten Gurtbenutzung eine entsprechende Kennung abgespeichert wird, die vom Fahrzeugsystem beim nächsten Motorstart abgefragt und zur Steuerung von relevanten Sicherheitssystemen berücksichtigt werden kann. Diese abgespeicherte Kennung kann auch vorzugsweise von einem externen Lesegerät ausgelesen werden. Damit lassen sich beim Fahrzeugservice auf sehr einfache Weise eventuell vorgenommene elektrische Manipulationen an der Gurtschlosssensorik feststellen. A preferred development provides that in the method for a detected fake belt use a corresponding identifier is stored, which can be queried by the vehicle system at the next engine start and taken into account for controlling relevant security systems. This stored identifier can also preferably be read by an external reader. This allows the vehicle service in a very simple way to make any electrical manipulations performed on the buckle sensor.
Die der Erfindung zugrunde liegende weitere Aufgabe hinsichtlich des Auswertesystems wird mit den Merkmalen des Patentanspruchs 9 gelöst. Das Aus wertesystem besitzt einen Speicher oder einen Gurtschloss- Zustandszähler, der die zeitliche Abfolge von Öffnung- und Schließvorgängen zu wenigstens einem Gurtschloss des Kraftfahrzeugs speichert. In Verbindung mit weiteren Fahrzeugereignissen und/oder Fahrzeugzuständen kann eine vorgetäuschte Gurtbenutzung erkannt werden. Mittels des Gurtschloss- Zustandszählers kann insbesondere festgestellt werden, ob eine Statusänderung von„Gurt zu" nach„Gurt auf" und umgekehrt erfolgt ist. Der Gurtschloss-Zustandszähler kann vorzugsweise im Steuergerät des Kraftfahrzeugs integriert sein, so dass keine zusätzlichen Steuerungsund/oder Speichermittel erforderlich sind. Der Inhalt des Speichers bzw. der Zustand des Gurtschloss-Zustandszählers kann über ein Diagnosesystem oder ein sonstiges Lesegerät am Kraftfahrzeug ausgelesen werden. The invention underlying further object with respect to the evaluation system is achieved with the features of claim 9. The evaluation system has a memory or buckle state counter which stores the timing of opening and closing operations to at least one buckle of the motor vehicle. In connection with further vehicle events and / or vehicle conditions, a fake harness use can be detected. By means of the buckle state counter, it can be determined in particular whether a change in status has taken place from "belt to" to "belt to" and vice versa. The buckle state counter may preferably be integrated in the control unit of the motor vehicle, so that no additional control and / or storage means are required. The contents of the memory or the state of the buckle state counter can be read via a diagnostic system or other reading device on the motor vehicle.
Die Erfindung wird nachfolgend anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert. The invention will be explained in more detail with reference to an embodiment shown in the drawing.
ein vereinfachtes Blockschaltbild zur Veranschaulichung des Zusammenwirkens des erfindungsgemäßen Auswertesystems mit dem Sicherheitssystem eines Kraftfahrzeugs und Fig. 2 ein Blockschaltbild einer Verknüpfungslogik zur Erläuterung des erfindungsgemäßen Verfahrens. a simplified block diagram illustrating the interaction of the evaluation system according to the invention with the safety system of a motor vehicle and Fig. 2 is a block diagram of a logic logic for explaining the method according to the invention.
Das in Figur 1 dargestellte Blockschaltbild umfasst ein Auswertesystem AWS, dem eingangsseitig Türschlosssignale TS, Gurtschlosssignale GS und weitere am Kraftfahrzeug auftretende Vorgänge und/oder Zustände kennzeichnende Signale übermittelt werden. Zu diesen weiteren Signalen gehören die aktuelle Fahrzeuggeschwindigkeit v, ein Sitzbelegungssignal SB, Brems- und Fahrpedalsignale BF, das Zündanlasssignal ZA, ein die örtliche Position des Fahrzeugschlüssel kennzeichnendes Schlüsselpositionssignal SP und ein Zeitsignal T. In einen im Auswertesystem AWS angeordneten Speicher M, mit dem auch die Funktion eines Gurtschloss-Zustandszählers realisierbar ist, können sämtliche eingangseitig auftretenden Signale mit einer zeitlichen Zuordnung abgespeichert werden. Das Auswertesystem AWS kann somit die unterschiedlichen Signale einer logischen Überprüfung unterziehen und dadurch insbesondere feststellen, ob eine Gurtschlossbetätigung oder ein vorhandener Gurtschlosszustand, beispielsweise geschlossenes Gurtschloss, unter Berücksichtigung der weiteren eingangsseitig auftretenden Signale TS, v, SB, BF, ZA, SP und T auf eine korrekte oder eine manipulierte Gurtbenutzung schließen lässt. Wird beispielsweise bei ständig geschlossenem Gurtschloss ein diesen Zustand kennzeichnendes Gurtschlosssignal GS an das Auswertesystem AWS übermittelt und tritt gleichzeitig an der entsprechenden Fahrzeugtür ein Türsignal TS auf, welches das Verschließen der Fahrzeugtüre von außen kennzeichnet, so kann das Auswertsystem AWS daraus auf eine manipulierte bzw. vorgetäuschte Gurtbenutzung schließen und das Sicherheitssystem SYS des Kraftfahrzeugs darüber informieren. Daraufhin kann das Sicherheitssystem SYS beispielsweise Systeme abschalten, die bei nicht ordnungsgemäß getragenem Sicherheitsgurt eine Gefährdung für die jeweilige Person oder die jeweiligen Personen darstellen würden. Das Auswertesystem AWS kann ebenso, wie der Speicher M, integrierter Bestandteil der im Kraftfahrzeug ohnehin vorhandenen Steuerungssysteme sein, so dass eine Erkennung, ob ein Sicherheitsgurt korrekt oder nur vorgetäuscht benutzt wird, durch eine Überwachung der zeitlichen Abfolge der Signale TS, GS, v, SB, BF, ZA, SP und T durchgeführt werden. Dabei ist es nicht unbedingt erforderlich, dass sämtliche dieser Signale bei deren Auswertung berücksichtigt werden, jedoch wird eine besonders hohe Zuverlässigkeit bei der Erkennung, ob eine vorgetäuschte Gurtbenutzung vorliegt oder nicht, durch Auswertung möglichst vieler dieser Signale erreicht, da damit auch raffiniertere technische Manipulationen im Zusammenhang mit einer vorgetäuschten Gurtbenutzung aufgedeckt werden können. Nachfolgend wird nun anhand von Figur 2 beispielhaft ein Verfahren zur Erkennung einer vorgetäuschten Gurtbenutzung beschrieben. Bei dem hier dargestellten Ausführungsbeispiel werden unterschiedliche Ereignisse und Zustände in einem Kraftfahrzeug durch logische UN D-Verknüpfungen 1 , 2, 3 überwacht. Mit der UND-Verknüpfung 1 wird geprüft, ob eine Türentriegelung von außen vorliegt und bei noch nicht geöffneter Tür das Fahrergurtschloss bereits als geschlossen angezeigt wird. Trifft dies zu, so ergibt die UND- Verknüpfung 1 eine Bestätigung TRUE1 , die bereits einen Hinweis auf eine vorgetäuschte Gurtbenutzung signalisiert. The block diagram shown in FIG. 1 comprises an evaluation system AWS to which door lock signals TS, belt lock signals GS and further signals occurring on the motor vehicle are transmitted on the input side. These further signals include the current vehicle speed v, a seat occupancy signal SB, brake and accelerator pedal signals BF, the ignition start signal ZA, a key position signal SP characterizing the position of the vehicle key, and a time signal T. In a memory M arranged in the evaluation system AWS which also the function of a buckle state counter can be realized, all signals occurring on the input side can be stored with a temporal assignment. The evaluation system AWS can thus subject the different signals to a logical check and thereby determine, in particular, whether a seat belt buckle operation or an existing seat belt buckle condition, for example closed buckle, takes into account the further signals TS, v, SB, BF, ZA, SP and T occurring on the input side correct or manipulated use of the belt. If, for example, a buckle signal GS characterizing this condition is transmitted to the evaluation system AWS while the buckle is permanently closed, and a door signal TS, which marks the closing of the vehicle door from the outside, occurs on the corresponding vehicle door, the evaluation system AWS can thereupon be manipulated or simulated Close belt use and inform the safety system SYS of the motor vehicle about it. As a result, the SYS safety system can, for example, switch off systems which, if the seat belt is not properly worn, would pose a risk to the respective person or to the respective persons. The evaluation system AWS, like the memory M, can be an integral part of the control systems already present in the motor vehicle, so that a detection as to whether a safety belt is used correctly or only pretended by monitoring the time sequence of the signals TS, GS, v, SB, BF, ZA, SP and T are performed. It is not absolutely necessary that all of these signals are taken into account in their evaluation, however, a particularly high reliability in the detection of whether a pretended belt use is or not achieved by evaluating as many of these signals as possible, as well as more sophisticated technical manipulations in Can be revealed in connection with a feigned belt use. A method for detecting a pretended belt use will now be described by way of example with reference to FIG. In the exemplary embodiment illustrated here, different events and states in a motor vehicle are monitored by logical UN D links 1, 2, 3. With the AND operation 1 it is checked whether there is a door unlocking from the outside and the driver's belt lock is already displayed as closed when the door is not yet open. If this is the case, the AND operation 1 results in a confirmation TRUE1, which already signals an indication of a feigned use of the belt.
Mittels einer weiteren UND-Verknüpfung 2 wird überprüft, ob ein Einsteigevorgang über ein Türschlosssteuergerät TSG erkannt wird und der Fahrbetrieb aufgenommen wurde und kein Statuswechsel am Gurtschloss vorliegt und das Fahrergurtschloss immer geschlossen ist und an einem Gurtschlosszähler keine Zählerstandsänderungen über mehrere Fahrtzyklen vorliegen. Stellt die logische UND-Verknüpfung 2 fest, dass alle diese Ereignisse und Zustände zutreffen, führt dies zu einer Bestätigung TRUE2, die einen weiteren Hinweis auf eine vorgetäuschte Gurtbenutzung signalisiert. By means of a further AND operation 2 is checked whether a boarding operation is detected by a door lock control unit TSG and the driving was recorded and no status change on the buckle is present and the Fahrergurtschloss is always closed and present at a Gurtschlosszähler no meter readings over several driving cycles. If the logical AND 2 detects that all these events and states are true, this will result in a TRUE2 acknowledgment signaling further evidence of fake strap usage.
Über eine weitere logische UND-Verknüpfung 3 wird außerdem überwacht, ob eine Türverriegelung von außen vorliegt und das Fahrergurtschloss immer bis zur Abschaltung des Bussystems vorliegt und am Fahrergurtschloss-Zähler keine Summenänderung festzustellen ist. Treffen alle diese Ereignisse und Zustände zu, ergibt die logische UND-Verknüpfung 3 eine Bestätigung TRUE3, die einen weiteren Hinweis auf eine vorgetäuschte Gurtbenutzung signalisiert. A further logical AND operation 3 also monitors whether a door lock is present from the outside and the driver's belt lock is always present until the bus system has been switched off and no change in the total number of times is detectable at the driver's wheel lock counter. If all these events and conditions coincide, the logical AND operation 3 results in an acknowledgment TRUE3, which signals a further indication of a feigned use of the belt.
Die Bestätigungen TRUE1 bis TRUE3 werden über eine vierte UND- Verknüpfung 4 überwacht, so dass erst bei gleichzeitigem Vorliegen der Bestätigungen TRUE1 bis TRUE3 insgesamt die Bestätigung TRUE abgeleitet wird, die dann zu Systemabschaltungen und/oder Systembeeinflussungen im Sicherheitssystem des Kraftfahrzeugs führt. Liegt die Bestätigung TRUE vor, wird also auf das Vorhandensein einer vorgetäuschten Gurtbenutzung geschlossen und das Sicherheitssystem des Kraftfahrzeugs darüber informiert. Dies kann nicht nur zur Abschaltung oder Änderung von im Kraftfahrzeug verwendeten Sicherheitssystemen führen, sondern auch zur Auslösung von optischen und/oder akustischen Warnsignalen führen. The confirmations TRUE1 to TRUE3 are monitored via a fourth AND operation 4, so that the confirmation TRUE is derived altogether only when the confirmations TRUE1 to TRUE3 are present at the same time which then leads to system shutdowns and / or system interference in the safety system of the motor vehicle. If the confirmation is TRUE, it is concluded that the presence of a feigned belt use and informed the safety system of the motor vehicle. This can not only lead to the shutdown or modification of safety systems used in motor vehicles, but also lead to the triggering of visual and / or audible warning signals.
Grundsätzlich besteht aber auch die Möglichkeit, bereits die Bestätigungen TRUE1 bis TRUE3 jeweils alleine zur Auslösung von optischen und/oder akustischer Warnsignalen heranzuziehen und/oder auf deren Basis bereits Eingriffe an Komfort- oder Sicherheitssystemen des Kraftfahrzeugs vorzunehmen. In principle, however, it is also possible already to use only the acknowledgments TRUE1 to TRUE3 alone for triggering optical and / or acoustic warning signals and / or to carry out interventions on comfort or safety systems of the motor vehicle on the basis thereof.

Claims

Patentansprüche claims
Verfahren zur Überwachung einer korrekten Gurtbenutzung von wenigstens einem Sicherheitsgurt in einem Kraftfahrzeug, wobei an dem jeweiligen Gurtschloss eines von einer Person belegten Fahrzeugsitzes der geöffnete und/oder geschlossene Gurtschlosszustand überwacht wird und bei Erkennung eines nicht geschlossenen Gurtschlosses ein Warnsignal und/oder eine Beeinflussung des Sicherheitssystems des Kraftfahrzeugs erfolgt, dadurch gekennzeichnet, dass auch eine Erkennung einer vorgetäuschten Gurtbenutzung durch eine Auswertung der zeitlichen Abfolge von Gurtschlossbetätigungen in Bezug auf weitere am Kraftfahrzeug festgestellte Vorgänge und/oder Zustände erfolgt. Method for monitoring a correct belt use of at least one safety belt in a motor vehicle, wherein the open and / or closed buckle state is monitored at the respective buckle of a vehicle seat occupied by a person and a warning signal and / or influencing the safety system when detecting a non-closed buckle of the motor vehicle, characterized in that also a detection of a pretended belt use by an evaluation of the time sequence of Gurtschlossbetätigungen in relation to other detected on the motor vehicle operations and / or conditions.
Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass die zeitliche Abfolge von Gurtschlossbetätigungen in Verbindung mit Türbetätigungen und/oder Sitzbelegungen zur Erkennung einer vorgetäuschten Gurtbenutzung ausgewertet wird. A method according to claim 1, characterized in that the temporal sequence of Gurtschlossbetätigungen is evaluated in conjunction with door operations and / or seat occupancy to detect a pretended belt use.
Verfahren nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass eine vorgetäuschte Gurtbenutzung am Fahrersitz festgestellt wird, a) wenn die Fahrertür von außen entriegelt wurde und bereits das Gurtschloss am Fahrersitz geschlossen ist, bevor die entriegelte Fahrertür geöffnet wurde; und/oder b) wenn das Öffnen der Fahrertüre erkannt und danach der Fahrbetrieb aufgenommen wird, ohne dass eine Betätigung am Gurtschloss erfolgt; und/oder c) wenn am Fahrergurtschloss bei mehreren Fahrzyklen mitMethod according to one of claims 1 or 2, characterized in that a feigned belt use is detected at the driver's seat, a) when the driver's door has been unlocked from the outside and already the buckle is closed at the driver's seat before the unlocked driver's door has been opened; and or b) if the opening of the driver's door is detected and then the driving operation is recorded without an operation on the buckle; and / or c) if at the rider lock with several driving cycles with
Türbetätigungen keine Zustandsänderung erfolgt; und/oder d) wenn eine Türverriegelung von außen erfolgt und das jeweils zugehörige Gurtschloss bis zur Abschaltung des gesamten Sicherheitssystems immer den geschlossenen Zustand meldet. Door operations no change of state occurs; and / or d) if there is a door lock from the outside and the respective belt buckle always signals the closed state until the entire safety system is switched off.
Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass ein Öffnen eines Sicherheitsgurts für einen kurzen Öffnungszeitraum mit danach erfolgtem Schließen des Sicherheitsgurts als Pseudogurtbenutzung bei der Auswertung der Betätigungen des Sicherheitsgurts unberücksichtigt bleibt. Method according to one of the preceding claims, characterized in that an opening of a seatbelt for a short opening period with subsequent closing of the seatbelt as a pseudogurt use in the evaluation of the operations of the seatbelt remains unconsidered.
Verfahren nach Anspruch 4, dadurch gekennzeichnet, dass als kurzer Öffnungszeitraum ein Zeitraum von wenigen Sekunden angesehen wird, insbesondere ein Zeitraum, der kleiner ist als fünf Sekunden ist. A method according to claim 4, characterized in that as a short opening period, a period of a few seconds is considered, in particular a period of time is less than five seconds.
Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass bei Erkennung einer vorgetäuschten Gurtbenutzung die adaptive Geschwindigkeitsregelung und/oder Start- Stop-Systeme beeinflusst oder deaktiviert werden. Method according to one of the preceding claims, characterized in that upon detection of a pretended belt use the adaptive cruise control and / or start-stop systems are influenced or deactivated.
Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass bei Erkennung einer vorgetäuschten Gurtbenutzung die Ansteuerung zugehöriger Airbagsysteme beeinflusst wird. Method according to one of the preceding claims, characterized in that upon detection of a pretended belt use, the activation of associated airbag systems is influenced.
8. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass zu einer erkannten vorgetäuschten Gurtbenutzung eine Kennung in einem Speicher (M) abgespeichert wird, die beim nächsten Motorstart abgefragt und zur Steuerung von relevanten8. The method according to any one of the preceding claims, characterized in that for a detected fake Gurtbenutzung an identifier in a memory (M) is stored, which queried at the next engine start and to control relevant
Sicherheitssystemen berücksichtigt wird. Security systems is considered.
9. Auswertesystem zur Durchführung des Verfahrens nach einem der vorhergehenden Ansprüche, wobei ein Gurtschlosssignal (GS) den geöffneten oder geschlossenen Gurtschlosszustand an das9. evaluation system for carrying out the method according to any one of the preceding claims, wherein a buckle signal (GS) the open or closed buckle state to the
Auswertesystem (AWS) meldet, dadurch gekennzeichnet, dass das Auswertesystem (AWS) einen Speicher (M) oder eine andere als Gurtschloss-Zustandszähler geeignete Einrichtung hat, der die zeitliche Abfolge von Öffnungs- und Schließvorgängen zu wenigstens einem Gurtschloss speichert, und dass das Auswertesystem (AWS) die festgestellten Gurtschlosszustände unter Berücksichtigung weiterer Ereignisse und Zustände des Kraftfahrzeugs auswertet. Evaluation system (AWS) reports, characterized in that the evaluation system (AWS) has a memory (M) or other suitable as a buckle state counter means that stores the time sequence of opening and closing operations to at least one buckle, and that the evaluation (AWS) evaluates the determined Gurtschlosszustände taking into account further events and conditions of the motor vehicle.
10. Auswertesystem nach Anspruch 9, dadurch gekennzeichnet, dass der Speicher (M) zur Speicherung einer das Vortäuschen einer10. evaluation system according to claim 9, characterized in that the memory (M) for storing a pretending a
Gurtbenutzung kennzeichnenden Kennung vorgesehen ist, und dass die Kennung zu Steuerungszwecken und/oder bei der Durchführung von Servicearbeiten aus dem Speicher (M) abfragbar ist. 11. Auswertesystem nach Anspruch 9, dadurch gekennzeichnet, dass hängende Gurtschlösser im geschlossenen Gurtschlosszustand erkannt werden und in der Werkstatt ausgelesen und erneuert werden können. Gurtgenutzung identifying identifier is provided, and that the identifier for control purposes and / or in the performance of service work from the memory (M) is queried. 11. evaluation system according to claim 9, characterized in that hanging belt buckles are detected in the closed buckle state and can be read in the workshop and renewed.
EP12780097.7A 2012-01-26 2012-10-19 Method and evaluation system for monitoring the correct use of a belt Active EP2807059B1 (en)

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US20150046041A1 (en) 2015-02-12
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